Fine adjustment pressure stabilizing valve
Technical Field
The utility model relates to the technical field of pressure stabilizing valves, in particular to a micro-adjusting pressure stabilizing valve.
Background
The pressure stabilizing valve adopts the opening degree of an opening and closing piece in a control valve body to regulate the flow rate of a medium, reduces the pressure of the medium, and simultaneously regulates the opening degree of the opening and closing piece by the action of the pressure behind the valve, so that the pressure behind the valve is kept within a certain range, and under the condition that the inlet pressure is continuously changed, the outlet pressure is kept within a set range, thereby protecting subsequent life production appliances.
In the prior art, the pressure stabilizing valve is generally adjustable, and an adjusting knob for controlling the adjusting spring can be adjusted on site according to the actual demands of customers. The adjusting knob directly acts on the adjusting spring, and under the acting force of the adjusting spring, the pressure stabilizing diaphragm generates force to act on the valve clack, so that the pressure stabilizing effect is achieved. But the structure of the pressure adjusting knob in the prior art is generally simple, the loosening of the adjusting knob can occur after long-time use, the condition that the adjusting knob runs out of the position due to the loosening is frequently encountered, particularly under the environment of larger vibration, the adjusting knob screwed to the preset position can run forward or backward when stressed, the loosening of the adjusting knob can cause unstable pressure adjustment, the voltage stabilizing value is not a set value, and obviously, the voltage stabilizing effect is quite unfavorable.
In order to solve the technical problem, the prior art is improved in the market, for example, a pressure stabilizing valve is disclosed in Chinese patent (publication No. CN 206503955U), a valve body and a valve cover are included, a diaphragm is arranged between the valve body and the valve cover, a cavity is arranged between the diaphragm and the valve body, a damping pipe used for communicating is arranged between the cavity and a liquid outlet, a communicating port is arranged between the liquid inlet and the liquid outlet, a valve core used for communicating or sealing the communicating port is arranged at the communicating port, the diaphragm is connected with the valve core, an adjusting component is arranged at the upper end of the diaphragm, the adjusting component comprises a spring mounting seat, a pressure adjusting spring is arranged between the spring mounting seat and the diaphragm, a mounting hole is formed in the valve cover, an adjusting knob which is in threaded connection with the mounting hole and drives the spring mounting seat to move up and down is arranged between the spring mounting seat, the adjusting knob comprises a shell and a ball arranged in the shell, a driving spring which drives the ball to move up and down is also arranged in the shell, and a groove which is in conflict with the ball is arranged on the spring mounting seat. The pressure stabilizing valve has stable pressure during pressure adjustment, and can effectively avoid the phenomenon of unstable pressure caused by loosening of the adjusting knob. But the structure is complex, the assembly difficulty is high, and the production cost is high.
There is a need for improvements over the prior art.
Disclosure of utility model
The utility model aims to overcome the defects and shortcomings of the prior art, and provides a micro-adjustment pressure-stabilizing valve, which can prevent the looseness and the position of an adjusting knob by arranging a rotation stopping mechanism between the adjusting knob and an upper valve body, so that the pressure-stabilizing function of the pressure-stabilizing valve is more reliable and the structure is simple.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a fine adjustment steady voltage valve, includes valve body and lower valve body, the upper end of valve body is provided with adjust knob, thereby upper valve body and lower valve body enclose to establish and are formed with the valve pocket, lower valve body is equipped with air inlet and gas outlet respectively, still including installing adjusting screw, adjusting nut, steady voltage diaphragm and the adjusting spring in the valve pocket, adjusting nut and upper valve body close-fitting connection, adjusting screw and adjusting nut threaded connection, adjusting spring supports and locates between steady voltage diaphragm and the adjusting nut, thereby adjust knob is connected with adjust knob rotation-stopping after passing the upper valve body, through rotating adjust knob in order to adjust the pretightning force of adjusting spring to steady voltage diaphragm and control the pressure value of valve body gas outlet down, be provided with rotation-stopping mechanism between adjust knob and the upper valve body, rotation-stopping mechanism includes along the inside insert of adjust knob of slot upper end periphery setting, when insert and slot are pegged graft and are joined in marriage, adjust knob can't rotate for the upper valve body, when insert and insert is pegged graft and join in fact, adjust knob can rotate for the upper valve body.
Further, the upper valve body is provided with a first annular groove and a second annular groove, the inner wall of the adjusting knob is circumferentially provided with a protrusion matched with the first annular groove or the second annular groove, when the protrusion is matched with the first annular groove, the insert block is in plug-in fit with the slot, and when the protrusion is matched with the second annular groove, the insert block is out of plug-in fit with the slot.
Further, an annular bulge is arranged between the first annular groove and the second annular groove, a first slope is arranged on the upper edge of the annular bulge, and a second slope is arranged on the lower edge of the annular bulge.
Further, the adjusting knob is provided with a plurality of shrapnel along the circumferential direction, and the bulge is arranged at the lower end of the shrapnel.
Further, the upper end of the adjusting screw is provided with a square-like column, and a square-like groove matched and connected with the square-like column is formed in the adjusting knob.
Further, the adjusting screw is provided with a convex ring along the circumferential direction, the upper valve body is provided with a through hole for the adjusting screw to pass through, and the convex ring is matched with the through hole stop.
Further, the upper end of the adjusting nut is provided with an annular convex edge, and the upper end of the adjusting spring is in propping fit with the annular convex edge.
Further, the upper end face of the adjusting knob is provided with a pressurizing mark, a depressurizing mark and a steering mark along the circumferential direction.
After the structure is adopted, the micro-adjustment pressure-stabilizing valve has the beneficial effects that the micro-adjustment pressure-stabilizing valve comprises an upper valve body and a lower valve body, wherein a valve cavity is formed by surrounding the upper valve body and the lower valve body, the lower valve body is respectively provided with an air inlet and an air outlet, the micro-adjustment pressure-stabilizing valve also comprises an adjusting screw rod, an adjusting nut, a pressure-stabilizing diaphragm and an adjusting spring which are arranged in the valve cavity, the upper end of the adjusting screw rod penetrates through the upper valve body and is in rotation-stopping connection with the adjusting knob, the pressure value of the air outlet of the lower valve body is controlled by adjusting the pretightening force of the adjusting spring on the pressure-stabilizing diaphragm through rotating the adjusting knob, and a rotation-stopping mechanism is arranged between the adjusting knob and the upper valve body and comprises a slot arranged along the outer periphery of the upper end of the upper valve body and an inserting block arranged in the adjusting knob. The utility model has simple structure and convenient adjustment, when the outlet pressure is required to be adjusted, the adjusting knob is pulled upwards, so that the insert block and the slot are separated from the plug-in fit, at the moment, the adjusting knob can rotate relative to the upper valve body, when the outlet pressure is not required to be adjusted, the adjusting knob is pressed downwards, the insert block and the slot are plugged-in fit, at the moment, the adjusting knob cannot rotate relative to the upper valve body, and therefore, the loosening and the position running of the adjusting knob can be prevented, and the pressure stabilizing function of the pressure stabilizing valve is more reliable.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below, and it will be apparent that the drawings in the description below are some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an exploded view of the overall structure of the present utility model;
FIG. 3 is a cross-sectional view of the overall structure of the present utility model;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3A in accordance with the present utility model;
FIG. 5 is a schematic perspective view of an adjustment knob of the present utility model;
FIG. 6 is a second perspective view of the adjustment knob of the present utility model;
FIG. 7 is a schematic perspective view of the upper valve body of the present utility model;
FIG. 8 is a schematic perspective view of an adjusting screw of the present utility model;
Fig. 9 is a schematic perspective view of an adjustment nut of the present utility model.
The reference numerals in fig. 1 to 9 are:
1. The valve comprises an upper valve body, 11, a first annular groove, 12, a second annular groove, 13, an annular bulge, 131, a first slope, 132, a second slope, 2, a lower valve body, 21, an air inlet, 22, an air outlet, 3, an adjusting knob, 31, bulge, 32, a spring plate, 33, a square-like groove, 34, a pressurizing mark, 35, a decompression mark, 36, a steering mark, 4, a valve cavity, 5, an adjusting screw rod, 51, a square-like column, 52, a convex ring, 6, an adjusting nut, 61, an annular convex edge, 7, a pressure stabilizing membrane, 8, an adjusting spring, 9, a rotation stopping mechanism, 91, a slot, 92 and an inserting block.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 9, the micro-adjusting pressure-stabilizing valve comprises an upper valve body 1 and a lower valve body 2, wherein an adjusting knob 3 is arranged at the upper end of the upper valve body 1, a valve cavity 4 is formed by surrounding the upper valve body 1 and the lower valve body 2, the lower valve body 2 is respectively provided with an air inlet 21 and an air outlet 22, the micro-adjusting pressure-stabilizing valve also comprises an adjusting screw 5, an adjusting nut 6, a pressure-stabilizing diaphragm 7 and an adjusting spring 8 which are arranged in the valve cavity 4, the adjusting nut 6 is in tight fit connection with the upper valve body 1, the adjusting screw 5 is in threaded connection with the adjusting nut 6, the adjusting spring 8 is abutted between the pressure-stabilizing diaphragm 7 and the adjusting nut 6, the upper end of the adjusting screw 5 is in anti-rotation connection with the adjusting knob 3 after penetrating through the upper valve body 1, the pre-tightening force of the adjusting spring 8 is adjusted by rotating the adjusting knob 3 so as to control the pressure value of the air outlet 22 of the lower valve body 2, a rotation-stopping mechanism 9 is arranged between the adjusting knob 3 and the upper valve body 1, the rotation-stopping mechanism 9 comprises a slot 91 arranged along the outer periphery of the upper end of the upper valve body 1 and a plug-in block 92 arranged inside the adjusting knob 3, and when the plug-in block 92 is in the plug-in the slot 91 is in the upper valve body 3 and the method and can be disconnected with the adjusting valve body 1 relative to the rotation of the adjusting knob 1. The upper valve body 1 is provided with a first annular groove 11 and a second annular groove 12, the inner wall of the adjusting knob 3 is circumferentially provided with a protrusion 31 matched with the first annular groove 11 or the second annular groove 12, the insert block 92 is in plug-in fit with the slot 91 when the protrusion 31 is matched with the first annular groove 11, and the insert block 92 is out of plug-in fit with the slot 91 when the protrusion 31 is matched with the second annular groove 12. The upper end of the adjusting screw 5 is provided with a square-like column 51, and the adjusting knob 3 is internally provided with a square-like groove 33 which is connected with the square-like column 51 in a matching way.
Based on the above embodiment, the present utility model is to solve the problem of providing a micro-adjustment pressure-stabilizing valve, which comprises an upper valve body 1 and a lower valve body 2, wherein a valve cavity 4 is formed by surrounding the upper valve body 1 and the lower valve body 2, the lower valve body 2 is respectively provided with an air inlet 21 and an air outlet 22, the micro-adjustment pressure-stabilizing valve further comprises an adjusting screw 5, an adjusting nut 6, a pressure-stabilizing diaphragm 7 and an adjusting spring 8 which are arranged in the valve cavity 4, the upper end of the adjusting screw 5 passes through the upper valve body 1 and is in rotation-stopping connection with the adjusting knob 3, the pre-tightening force of the adjusting spring 8 on the pressure-stabilizing diaphragm 7 is adjusted by rotating the adjusting knob 3 so as to control the pressure value of the air outlet 22 of the lower valve body 2, a rotation-stopping mechanism 9 is arranged between the adjusting knob 3 and the upper valve body 1, and the rotation-stopping mechanism 9 comprises a slot 91 arranged along the outer periphery of the upper end of the upper valve body 1 and an inserting block 92 arranged inside the adjusting knob 3. The utility model has simple structure and convenient adjustment, when the outlet pressure is required to be adjusted, the adjusting knob 3 is pulled up to enable the bulge 31 to be matched with the second annular groove 12, the inserting block 92 is in plug-in fit with the inserting groove 91, the adjusting knob 3 can rotate relative to the upper valve body 1, when the outlet pressure is not required to be adjusted, the adjusting knob 3 is pressed down to enable the bulge 31 to be matched with the first annular groove 11, the inserting block 92 is in plug-in fit with the inserting groove 91, and the adjusting knob 3 cannot rotate relative to the upper valve body 1, so that the loosening and running of the adjusting knob 3 can be prevented, and the pressure stabilizing function of the pressure stabilizing valve is more reliable. The upper end of the adjusting screw 5 is provided with a square-like column 51, and the adjusting knob 3 is internally provided with a square-like groove 33 which is connected with the square-like column 51 in a matching way. In this embodiment, as shown in fig. 6 and 8, the adjustment screw 5 is in rotation-stopping fit connection with the adjustment knob 3 by the fit of the square-like column 51 and the square-like groove 33, and when the adjustment knob 3 is rotated, the adjustment screw 5 can be synchronously rotated with the adjustment knob 3. Here, the working principle of the adjustable pressure stabilizing valve is the prior art and will not be described in further detail.
As another preferable mode of the present utility model, an annular protrusion 13 is disposed between the first annular groove 11 and the second annular groove 12, a first slope 131 is disposed on an upper edge of the annular protrusion 13, and a second slope 132 is disposed on a lower edge of the annular protrusion 13. The adjusting knob 3 is provided with a plurality of elastic pieces 32 along the circumferential direction, and the protrusions 31 are arranged at the lower ends of the elastic pieces 32. In this embodiment, as shown in fig. 4, 6 and 7, the diameter of the side wall of the adjusting knob 3 can be elastically changed by the arrangement of the elastic piece 32, so that the annular protrusion 13 can slide between the first annular groove 11 and the second annular groove 12, and meanwhile, the arrangement of the first slope 131 and the second slope 132 plays a guiding role, which is more beneficial to the sliding of the annular protrusion 13 between the first annular groove 11 and the second annular groove 12.
As another preferable scheme of the utility model, the adjusting screw 5 is provided with a convex ring 52 along the circumferential direction, the upper valve body 1 is provided with a through hole for the adjusting screw 5 to pass through, and the convex ring 52 is matched with the through hole stop. In this embodiment, as shown in fig. 4, the convex ring 52 cooperates with the stop of the through hole to limit the movement of the adjusting screw 5, so as to avoid the adjusting screw 5 from being separated from the upper valve body 1 unexpectedly.
As another preferable mode of the utility model, an annular convex edge 61 is arranged at the upper end of the adjusting nut 6, and the upper end of the adjusting spring 8 is in abutting fit with the annular convex edge 61. In this embodiment, as shown in fig. 4 and 8, the annular flange 61 applies a pressing force to the adjusting spring 8, so as to adjust the pretightening force of the adjusting spring 8 to the pressure stabilizing diaphragm 7, thereby controlling the pressure value of the air outlet 22 of the lower valve body 2.
As another preferable aspect of the present utility model, the upper end surface of the adjusting knob 3 is provided with a pressurizing mark 34, a depressurizing mark 35 and a steering mark 36 along the circumferential direction. In this embodiment, as shown in fig. 5, the pressure increasing identifier 34, the pressure decreasing identifier 35 and the turning identifier 36 are used for guiding the user to operate, when the pressure of the air outlet 22 needs to be adjusted to be smaller, the adjusting knob 3 is rotated in the direction indicated by the pressure decreasing identifier 35, and when the pressure of the air outlet 22 needs to be adjusted to be larger, the adjusting knob 3 is rotated in the direction indicated by the pressure increasing identifier 34.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.